We explored in this study the impact of social media on the viewership of mass media news in the stock market. We argue that the popularity of a topic on social media can affect the viewership of news articles the next day on this same topic. Moreover, the detailed characteristics of how social...

Over the past two decades, substantial research has established the importance of sentiment in financial markets. We know that sentiment impacts investor decisions; because of advanced text mining and sentiment analysis techniques, automated trading strategies based on sentiment are prevalent....

Because implied volatility is essential for pricing options, analyzing derivative strategies and measuring risk in investment portfolios containing derivatives, understanding variations in implied volatility also becomes vital. Aside from a secular trend, volatility clustering and calendar...